Home / 15,313,828.27-21,133,533.80-8,438,753.20

Finding the Fourth Proportional to 15,313,828.27, 21,133,533.80 and 8,438,753.20

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Solution

The fourth proportional to 15,313,828.27, 21,133,533.80 and 8,438,753.20 is: 11,645,727.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,313,828.27 : 21,133,533.80 = 8,438,753.20 : x
  2. Step 2: Convert to fraction form
    15,313,828.27/21,133,533.80 = 8,438,753.20/x
  3. Step 3: Cross multiply
    15,313,828.27x = 21,133,533.80 × 8,438,753.20
  4. Step 4: Simplify right side
    15,313,828.27x = 178,340,675,982,058.16
  5. Step 5: Solve for x
    x = 178,340,675,982,058.16/15,313,828.27
  6. Step 6: Final answer
    x = 11,645,727.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.